This article discusses the Body Mass Index (BMI) categories in Japan and what is considered obese according to the Ministry of Health, Labour and Welfare. It outlines the normal weight range (18.5-24), overweight range (25-29), and obesity range (30 or above) for Japanese adults. It also provides tips on how to safely reduce excess body fat if one falls into the obesity category, as well as potential health risks associated with being overweight or obese.